Patents Assigned to Demag Mobile Cranes GmbH
  • Patent number: 7004338
    Abstract: An empty container store for the temporary storage of empty ISO containers, in particular in fully automatic container terminals of sea ports or river ports includes a gantry bridge crane which spans the empty container store. The gantry bridge can be moved on an elevated craneway and has a traveling crab which can be moved thereon in the longitudinal direction thereof. A vertical lifting column is fastened to the traveling crab for lifting and lowering a load receiving means for the empty container. The load receiving means includes a spreader on a spreader support which is arranged on a spreader carriage which is guided on the lifting column by rollers on a spreader support.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: February 28, 2006
    Assignee: Demag Mobile Cranes GmbH
    Inventors: Hermann Franzen, Joachim Kröll
  • Patent number: 6679394
    Abstract: The invention is directed to a ring lift crane with a liftable ring forming a circular traveling path and having a plurality of segments which can be connected to one another. Within the ring, there is arranged a chassis having a superstructure which is connected with the chassis so as to be rotatable and which has a plurality of winches. The superstructure is provided with an adapter in each of two oppositely located end areas, and the adapters are supported in a rolling manner on the circular traveling path of the ring by rollers which are arranged in the end area of the adapters.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: January 20, 2004
    Assignee: Demag Mobile Cranes GmbH & Co., KG
    Inventors: Eberhard Schuffert, Rüdiger Zollondz
  • Patent number: 6595603
    Abstract: An undercarriage for a track vehicle includes an endless track having links of constant length connected end to end in the direction of travel, each link having a pair of spaced-apart guide webs and a cog which connects the webs, the cogs being of substantially identical size. The drive sprocket wheel has at least two circumferential sections with teeth having spaces therebetween for engaging cogs. The tooth pitch in each section decreases in the direction of travel from a maximum valve to a minimum value, the space between teeth having the minimum value being sufficient to accommodate one of the cogs with clearance.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: July 22, 2003
    Assignee: Demag Mobile Cranes GmbH & Co. KG
    Inventors: Werner Rutz, Ingo Nöske
  • Publication number: 20030085391
    Abstract: A winch includes a cylindrical cable drum with cable grooves machined into the surface. A lifting cable can be wound in a plurality of layers onto the grooves. Two flanged disks limit the cable drum laterally and have a securing device for the end of the lifting cable in the first layer of winding. The end of the lifting cable may be pushed into a cable duct which is machined within one of the two flanged disks and emerges from an emergence region of the cable duct substantially on the radius of curvature of the first layer of winding from the inner side of the one of the flanged disks. The course of the emergence region approximately corresponds to the helical course of the lifting cable in the first layer thereof. The lifting cable is retainable by non-positive or positive fitting in the cable duct.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 8, 2003
    Applicant: Demag Mobile Cranes GmbH & Co. KG
    Inventor: Ingo Noske
  • Patent number: 6523708
    Abstract: A rotatably mounted ring having external teeth which mesh with a drive pinion of a fixedly mounted slewing gear, has distributed over the circumference, alternately portions of the same length with recesses and portions of the same length with radially directed webs and can be coupled to a complementary ring in the manner of a bayonet fastening. The complementary ring has, both on the inside and on the outside, portions of the same length with recesses and portions of the same length with radially directed webs. The ring provided with the external toothing is provided with complementary recesses and webs.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: February 25, 2003
    Assignee: Demag Mobile Cranes GmbH & Co. KG
    Inventor: Alfons Weckbecker
  • Patent number: 6520602
    Abstract: A guide for a multi-link endless chain of a track-type undercarriage, especially for cranes, has an undercarriage support, at least one drive sprocket wheel provided with chain teeth, possibly an idler, and several track rollers. Each chain link of the endless chain has two guide webs which are symmetric to the center, spaced a certain distance apart, and extend in the travel direction. The webs have engaging surfaces which ride on opposed circumferential flanges on the drive sprocket wheel. A cog connects the two webs below the engaging surfaces and meshes with the chain teeth of the drive sprocket wheel. The guide has two parallel rails oriented in the travel direction of the endless chain, the inside surfaces of the rails coming to rest against the outside surfaces of the associated guide webs when the guide function is occurring.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: February 18, 2003
    Assignee: Demag Mobile Cranes GmbH
    Inventors: Werner Rutz, Ingo Nöske
  • Patent number: 6516960
    Abstract: A method for synchronously retracting and extending a jib of a crane having a plurality of telescoping lengths, preferably in a vehicle crane, extending and retracting being with driving means which is one of a hydraulically-driven, multistage telescoping cylinder and a plurality of single-stage telescoping cylinders operated in parallel.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: February 11, 2003
    Assignee: Demag Mobile Cranes GmbH & Co. KG
    Inventors: Jürgen Schlachter, Hans Allgeier, Jürgen Appel
  • Patent number: 6508524
    Abstract: A drive sprocket for an endless chain on a track-type undercarriage includes a toothed wheel having a plurality of circumferential teeth extending from a root circle. A pair of mounting rings fixed to opposite axial sides of the wheel support a respective pair of rotating rings by means of bearings, each rotating ring forming a tread having a diameter which is small than the diameter of the root circle. The endless chain has a plurality of links connected end-to-end, each link having a pair of spaced apart guide webs extending in the direction of travel and connected by a cog which engages between two adjacent teeth on the toothed wheel, each guide web being profiled to ride on one of the treads.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: January 21, 2003
    Assignee: Demag Mobile Cranes GmbH & Co. KG
    Inventors: Werner Rutz, Ingo Nöske
  • Publication number: 20020092819
    Abstract: A rail-borne handling machine for handling containers and bulk materials in seaports and inland harbors includes a framework for carrying load bearing means and includes gantry supports arranged on the framework. Rail-based traveling gears are connected to the gantry supports of the framework via articulated connections for supporting the framework on rails. Balancers connected to the gantry supports via articulated connections and at least four steerable tire-based traveling gears are connected to the framework via the balancers. The at least four steerable tire-based traveling gears are symmetrical to a longitudinal axis and a transverse axis of said handling machine. The handling machine is maneuverable via the at least four steerable tire-based traveling gears when the rail-based traveling gears are raised from the rails.
    Type: Application
    Filed: December 11, 2001
    Publication date: July 18, 2002
    Applicant: Demag Mobile Cranes GmbH
    Inventors: Manfred Beyer, Kurt Hartmann, Dieter Klessinger
  • Publication number: 20020020685
    Abstract: A rotatably mounted ring having external teeth which mesh with a drive pinion of a fixedly mounted slewing gear, has distributed over the circumference, alternately portions of the same length with recesses and portions of the same length with radially directed webs and can be coupled to a complementary ring in the manner of a bayonet fastening. The complementary ring has, both on the inside and on the outside, portions of the same length with recesses and portions of the same length with radially directed webs. The ring provided with the external toothing is provided with complementary recesses and webs.
    Type: Application
    Filed: August 7, 2001
    Publication date: February 21, 2002
    Applicant: Demag Mobile Cranes GmbH
    Inventor: Alfons Weckbecker
  • Publication number: 20010054844
    Abstract: A guide for a multi-link endless chain of a track-type undercarriage, especially for cranes, has an undercarriage support, at least one drive sprocket wheel provided with chain teeth, possibly an idler, and several track rollers. Each chain link of the endless chain has two guide webs which are symmetric to the center, spaced a certain distance apart, and extend in the travel direction. The webs have engaging surfaces which ride on opposed circumferential flanges on the drive sprocket wheel. A cog connects the two webs below the engaging surfaces and meshes with the chain teeth of the drive sprocket wheel. The guide has two parallel rails oriented in the travel direction of the endless chain, the inside surfaces of the rails coming to rest against the outside surfaces of the associated guide webs when the guide function is occurring.
    Type: Application
    Filed: May 25, 2001
    Publication date: December 27, 2001
    Applicant: Demag Mobile Cranes GmbH
    Inventors: Werner Rutz, Ingo Noske
  • Publication number: 20010049313
    Abstract: A drive sprocket for an endless chain on a track-type undercarriage includes a toothed wheel having a plurality of circumferential teeth extending from a root circle. A pair of mounting rings fixed to opposite axial sides of the wheel support a respective pair of rotating rings by means of bearings, each rotating ring forming a tread having a diameter which is small than the diameter of the root circle. The endless chain has a plurality of links connected end-to-end, each link having a pair of spaced apart guide webs extending in the direction of travel and connected by a cog which engages between two adjacent teeth on the toothed wheel, each guide web being profiled to ride on one of the treads.
    Type: Application
    Filed: May 23, 2001
    Publication date: December 6, 2001
    Applicant: Demag Mobile Cranes GmbH
    Inventors: Werner Rutz, Ingo Noske
  • Publication number: 20010045773
    Abstract: An undercarriage for a track vehicle includes an endless track having links of constant length connected end to end in the direction of travel, each link having a pair of spaced-apart guide webs and a cog which connects the webs, the cogs being of substantially identical size. The drive sprocket wheel has at least two circumferential sections with teeth having spaces therebetween for engaging cogs. The tooth pitch in each section decreases in the direction of travel from a maximum valve to a minimum value, the space between teeth having the minimum value being sufficient to accommodate one of the cogs with clearance.
    Type: Application
    Filed: May 2, 2001
    Publication date: November 29, 2001
    Applicant: Demag Mobile Cranes GmbH
    Inventors: Werner Rutz, Ingo Noske